正壓快篩站之簡易型換氣系統設計雛型──以20呎貨櫃為例

Positive Pressure Screening Station Simple Ventilation Equipment Research and Development–20ft Container for Example

新型冠狀病毒全球性流行，各式各樣的移動簡易式檢體篩檢站需求量大增，其中利用運輸移動便利的貨櫃空間作為篩檢站且設定為正壓空間的案例相對較少，而此類空間的正壓設計參考基準更是少見。本研究利用設計開發出的簡易型換氣設備系統來驗證20呎貨櫃空間的正壓換氣效果，希望藉由驗證實測數據提供今後相關換氣系統的設計參考基準。研究分析結果顯示，採用變頻式簡易型風扇設備要達室內正壓2.0Pa條件時，空間內如果無洩壓百葉口，風扇的設計換氣次數建議至少6次/h以上，有洩壓百葉口則至少10次/h以上。另外，運用於一般用途時，要滿足建築技術規則最小換氣量需求，風扇的設計換氣次數同樣建議至少6次/h以上，但在10次/h以後換氣效率則趨緩。也就是說20呎貨櫃空間配置簡易型換氣設備時，設計者可依室壓需求及洩壓百葉口有無來選用最小換氣設備容量，但風扇的設計換氣次數建議最少6次/h以上及距離出風口越近壓力越高。

With the COVID-19 epidemic, the demand for mobile simple screening stations has greatly increased. There are relatively few cases of using container space as screening stations and setting them as positive pressure spaces, and the design reference benchmarks for such spaces are even rarer. This study uses simple ventilation equipment to verify the positive pressure effect of the 20-ft container space, and hopes to provide a reference for the design of related ventilation equipment systems in the future. The results show that when the frequency conversion simple fan is used to achieve indoor 2.0Pa, if there is no grille, the design ventilation frequency should be at least 6 times/h, and with the grille, the ventilation frequency should be at least 10 times/h. For general space use, the minimum ventilation rate must be met, and the design ventilation frequency of the fan should be at least 6 times/h, but the efficiency will slow down after 10 times/h. That is to say, when a simple ventilation device is used in the 20-ft container space, the fan is designed to ventilate at least 6 times/h.